/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMeshOctree3.h
Reinsert a set of triangles into the tree. Internally precomputes which triangles need re-inserting, which can be done in parallel and generally saves time as some triangles can be skipped.
void ReinsertTrianglesParallel ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & Triangles, [TArray](API\Runtime\Core\Containers\TArray)< uint32 > & TempBuffer, [TArray](API\Runtime\Core\Containers\TArray)< bool > & TempFlagBuffer )